There are hourly boat tours to the four main islands of Bantry Bay. These are all summer schedules.

The car-ferry to Bere Island off Castletownbere operates from 9am. Ancient monuments, Christian settlements, the Viking harbour, and the gigantic gun batteries of the British Navy can be seen on the Island. It also boasts a beach and lovely restaurants specialising in seafood

The Whiddy Island ferry runs daily from 9am till late. Whiddy Island has ancient church ruins, castle ruins, gun batteries, and remains of a WWI seaplane base.

The Garnish Island, also kown as the garden Island with its a magnificent 37 acres of sub-tropical plants and  a Martello Tower. Ferries operate from about 8am till 6pm. The ferry charge does not include the entry charge to the Island. 

Access to another Island, Dursey Island, on the tip of the northern Peninsula is by cablecar over the sea-rapids above the narrow channel.